What is the correct CPT code for dental implant, endosteal? (D6010)I keep coming to the code of 21248-partial or 21249-complete. I was assuming to use the 21248 since NOS. Is the correct? If not, please help! Thank you!

Depending on the insurance carrier, some carriers state 1-3 teeth use 21248 partial 4 or more use 21249. While other carriers state if you are performing the surgical phase only use 21248 and if you are performing both the surgical and prosthetic phase use 21249.